Al Kooper

American retired songwriter and record producer

Al Kooper is an American retired songwriter, record producer, and musician. Throughout much of the 1960s and 1970s he was a prolific studio musician, including playing organ on the Bob Dylan song "Like a Rolling Stone", French horn and piano on the Rolling Stones song "You Can't Always Get What You Want", and lead guitar on Rita Coolidge's "The Lady's Not for Sale". From Wikipedia